About the Geo (geography) thing, for the landform, you will need to do all the different landforms on page 80 of your Geo textbook.and put in pictures of it.
The volcano thing, you would need to refer to page 86 and 87 of your Geo textbook and write about the Active, Dormant and Extinct volcanoes. The answers are there.And you would also need to write out a case study of a volcano. That should answer the problems you are having with your Geo homework.
Good Luck,
Yeo Ke Wei